i=1
while i<=100:
    print("好好学习天天向上")
    i+=1
# 死循环
while True:
    print("开始学习的第一天")
i=1
R=0
while i<=100:
    # print(i)
    R += i
    i += 1
print(R)
L=1
while L<=5:
    print(f"这是第{L}次外循环")
    H=2
    while H<=7:
        print(f"这是第{H}次内循环")
        H+=1
    L+=1